This is the
house where we see the Trinity Killer
('Arthur Mitchell', played by John Lithgow), kill his first victim.

We see him waiting,
naked, in the woman's house. When she enters, he takes her captive.

We then see
them naked together in the bathtub, with him holding her in a chokehold
from behind.

The sicko then
takes a straight razor and slits the femoral artery in her thigh.

As she bleeds
out, and the bathtub water slowly turns red, Trinity holds a mirror up
to her face so that she can see herself as she dies.

We see the house
later, in the morning, after the police arrive to investigate.

While checking
out the scene, Dexter discovers blood evidence underneath the old floor
tiles around the bathtub, indicating that there was a second murder there
some 30 years ago. More of Trinity's twisted handiwork.

Two other things
happen at this location: Quinn meets news reporter Christine Hill for the
first time (outside, on the lawn, when she asks him questions about the
murder), and Dexter is surprised to see FBI agent Lundy show up.

Q.
What is it actually in real life?

A. A residential
home. But not near Miami.

Q.
Where can I find it in real life?

A. The house
is at 2941 Nipomo Avenue,
in Long Beach, CA.

That's on the
west side of the street, just four houses south of Spring Street.

It's also just
a few blocks west of El Dorado Park, where they filmed several scenes this
season (including the roll-over accident and the Tampa pit stop).

*
The scene of Trinity murdering his victim in the bathtub is intercut with
scenes of Dexter arriving at home, and trying to sneak out of his car without
waking the new baby. That was supposed to be in front of Dexter's
new house, but in reality, they shot the scene on Nipomo Avenue, at
the same time, just three houses south of the crime scene house (see the
second photo below). Of course, Dexter's new house is miles away, in the
Bluff Park section of Long Beach, but I suppose they thought that since
it was dark, and you don't really see the background in the scene, it didn't
really matter.

I
shot the one photo below in November 2009.

[
Warning: This is a private home. Do not trespass
on their property, knock on their door,
or do anything else that might disturb the residents. ]

The
photos below, of the actual filming, were shot on the afternoon
of June 5, 2009, by Kerry Weiss:

This
shot is of the "murder house" while they were filming interiors
(looking west).

The
shot below is also looking west, three houses to the south, where they
parked Dexter's Kia (for a brief, unrelated scene. *)

And
this is a great shot Kerry got of Michael C. Hall's director's chair.